Messages in this thread | | | Date | Tue, 16 Mar 2010 15:22:00 +0900 | From | Tejun Heo <> | Subject | Re: ATA 4 KiB sector issues. |
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Hello, James.
On 03/16/2010 03:14 PM, James Bottomley wrote: > So, it is true to say that picking a certain H/S geometry (which is > entirely withing the gift of the partitioner) will align msdos label > partitions, but will be don't care for all other labels: all other > partition labels (like gpt) use block as offset and don't have any truck > with the fictitious C/H/S stuff.
For any modern Linux and Windows, CHS simply doesn't matter. They don't look at it at all.
> The big problem is that 99% of the x86 systems out there still use the > ancient msdos label for their boot disks, so aligning H/S going forwards > will give us a nice "just works" for x86 boxes.
What I don't get is that how picking up a custom geometry can make things work when there is *no* reliable way to determine which geometry was used during partitioning once the partitioning is complete. Most BIOSs these days will simply report the geometry as being 255/63 regardless of the geometry used during partitioning. So, how can using a custom geometry give that nice "just works" for x86 boxes when nobody knows what geometry is in use?
Thanks.
-- tejun
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